import cv2
import numpy as np

img=cv2.imread('football.jpg')
print (img.shape)

ball=img[240:280,260:300]
img[273:313,110:150]=ball

cv2.namedWindow('image', cv2.WINDOW_NORMAL)
cv2.imshow('image',img)
cv2.waitKey(0)
cv2.destroyAllWindows()